Check out the clip to see his full encounter with Dawson, as well as how she and Casey react.
In an exclusive clip from next week’s episode, the man is back — and holding a dangerous grudge against Casey and, by extension, Dawson (Monica Raymund).
Casey chose the latter, but when he went back in to try to get to the first victim, the man was nowhere to be found.
We already know the man has a gun, and now he’s got a vendetta against Casey and the rest of 51 to go with it.